Saxon XVIII H

Infobox German Railway Vehicle
Farbe1=698B69
Farbe2
Baureihe=Saxon XVIII H
DRG Class 18.0
Abbildung=
Name=

Nummerierung=196–205 18 001–010
Hersteller=Sächsische Maschinenfabrik, Chemnitz
Baujahre=1917/18
Ausmusterung=1965
Anzahl=10
Wheel arrangement=4-6-2
Achsformel=2'C1' h3
Gattung=
Spurweite=1,435 mm
Treibraddurchmesser= 1,905 mm
VorneLaufraddurchmesser=1,065 mm
HintenLaufraddurchmesser=1,260 mm
Anfahrzugkraft=
Beschleunigung=
Leistungskennziffer=
Höchstgeschwindigkeit=120 km/h
LängeÜberPuffer=
Länge=22,150 mm
Höhe=4,550 mm
Breite=
Drehzapfenabstand=
AchsabstandDerFahrgestelle=
FesterRadstand=4,100 mm
Gesamtradstand=11,375 mm
RadstandMitTender=18,597 mm
Leermasse=84.4 t
Dienstmasse =93.5 t
DienstmasseMitTender =
Reibungsmasse=50.7 t
Radsatzfahrmasse=16.9 t
Antrieb=
Geschwindigkeitsmesser=
Steuerung=
Übersetzungsstufen=
Kupplungstyp=
Bremsen=Westinghouse compressed-air brake
Zusatzbremse=
Feststellbremse=
Zugheizung=
Lokbremse=
Zugbremse=
Zugsicherung=
Halbmesser=
Besonderheiten=

Zylinderdurchmesser =500 mm
Zylinderanzahl=3
Kolbenhub=630 mm
Kuppelraddurchmesser=
Kessel=
Kessellänge=
Kesseldruck=14 bar
AnzahlHeizrohre=156
Heizrohrlänge=
Rostfläche=4.52 m²
Strahlungsheizfläche=15.6 m²
Rohrheizfläche=200.6 m²
Überhitzerfläche=72.00 m²
Verdampfungsheizfläche=215.76 m²
IndizierteLeistung= 1,700 PSi
Steuerungsart=Walschaerts (Heusinger)
Zylinderdruck=

Tenderbauart= sä 2'2' T 31
DienstmasseTender=
Wasser=
Brennstoff=The Saxon Class XVIII $extstyle\; mathfrak\{H\}$ was a German six-coupled tender locomotive built for the Royal Saxon State Railways ("Königlich Sächsische Staatseisenbahnen") in 1917/18 for express train services. The Deutsche Reichsbahn grouped them in 1925 into DRG Class 18.0.

History

After a number of four-cylinder compounds had been taken into service in Saxony, the Saxon XVIII H appeared with a three-cylinder engine based on a Prussian prototype. In 1917 and 1918 the Sächsische Maschinenfabrik in Chemnitz built ten examples of this class.

The newly-formed Deutsche Reichsbahn took all 10 locomotives in 1925 over and gave them the numbers 18 001–010.

Locomotive 18 002 was destroyed in the Second World War; the remaining engines went into the Deutsche Reichsbahn in East Germany after the war had ended. They were station at Dresden-Altstadt locomotive depot and were later retired between 1963 and 1965.

Design features

To begin with the Class XIII H had a boiler with a firebox located above the frame. This was made from three boiler rings, the third one being slightly conical in shape. The boiler feedwater was supplied through two steam injectors and a Knorr feedwater pump with surface economiser. The second injector was later omitted. The steam engine was configured as a three-cylinder system with simple steam expansion. Two cylinders were located in the usual horizontal position on the outside, the third cylinder was built between the frame sides at an angle. All three cylinders drove the second coupled axle. The gearing of the inside cylinder was operated from the Heusinger valve gear of the outside cylinders via levers and intermediate shafts.

The three coupled axles were fixed in the frame. The leading bogie had a side play of 38 mm, the trailing Adams axle could swing 60 mm to the side.

The locomotive brake was a Westinghouse compressed-air brake. Braking worked on one side of all the carrying and coupled wheels. Some of the locomotives were later equipped with Indusi train protection.

The locomotives were coupled to Saxon sä 2'2' T 31 tenders.

Service

Because the trains on the Central Mountain routes were largely hauled by the powerful successor class, the Saxon XX HV (DRG Class 19.0), the Saxon XVIII Hs were mainly deployed on less hilly lines of Dresden–Leipzig and Dresden–Berlin. After the Second World War the nine remaining engines were concentrated in Dresden and were mostly used to haul express services to Berlin.

Literature

* Fritz Näbrich, Günter Meyer, Reiner Preuß: "Lokomotivarchiv Sachsen 1", transpress VEB Verlag für Verkehrswesen, Berlin, 1983
* Erich Preuß, Rainer Preuß: "Sächsische Staatseisenbahnen", transpress Verlagsgesellschaft mbH, Berlin, 1991, ISBN 3-344-70700-0
* Günther Reiche: "Richard Hartmann und seine Lokomotiven". Oberbaumverlag, Berlin/Chemnitz 1998, ISBN 3-928254-56-1

External links

* [http://www.private-nbahn.de/orginale/orginal_1.php?var1=52 Photograph and technical data (German)]
* [http://www.osterthun.com/2a.models01-19/Baureihe~18.0.htm Models of DRG Class 18.0]

ee also

*List of Saxon locomotives and railbuses

External links

* There is a relevant English-language forum at [http://germanrail.8.forumer.com/index.php Railways of Germany]